为什么org.apache.xerces.parsers.SAXParser不会跳过utf8编码的xml中的BOM? [英] why org.apache.xerces.parsers.SAXParser does not skip BOM in utf8 encoded xml?
问题描述
我有一个带有utf8编码的xml。
此文件包含BOM文件的开头。
所以在解析过程中我遇到了org.xml.sax.SAXParseException:prolog中不允许使用内容。
我无法从文件中删除这3个字节。
我无法将文件加载到内存中并在此处删除它们(文件很大)。
因此,出于性能原因,我正在使用SAX解析器,如果它们在标记之前存在,则只想跳过这3个字节。
我应该为此继承InputStreamReader吗?
I have an xml with utf8 encoding. And this file contains BOM a beginning of the file. So during parsing I am facing with org.xml.sax.SAXParseException: Content is not allowed in prolog. I can not remove those 3 bytes from the files. I can not load file into memory and remove them here (files are big). So for performance reasons I'm using SAX parser and want just to skip those 3 bytes if they are present before "" tag. Should I inherit InputStreamReader for this?
我是java新手 - 请告诉我正确的方法。
I'm new in java - show me the right way please.
推荐答案
之前已经出现了,我找到了 Stack Overflow上的答案,当它发生在我身上时。链接的答案使用 PushbackInputStream
来测试BOM。
This has come up before, and I found the answer on Stack Overflow when it happened to me. The linked answer uses a PushbackInputStream
to test for the BOM.
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